AutoSync for OneDrive & OneDrive for Business is a free app that lets you access your files from anywhere, even if you don't have an Internet connection.

The app is designed to be used with the Microsoft OneDrive, which is a cloud storage service that lets you sync your files, photos, and videos between multiple devices. The service also lets you access your files offline and even create new ones.

To use the app, you first need to download it from the Google Play Store. After that, open the app, and you will be able to choose which drive to sync. If you choose the Microsft OneDrive, you will be able to choose the folders to sync, and the files to download. After that, you will be able to start syncing.